Identify the appropriate test statistic write ztest or t test 4. The CEO of a battery manufacturing company claimed thattheir batteries would last an average of 280 hours under normal use. Aresearcher randomly selected 20 batteries from the production line andtested them. The tested batteries had a mean life span of 250 hours with astandard deviation of 40 hours. Do we have enough evidence to suggest thatthe claim of an average of 280 hours is false?5. It was known that the number of tickets purchased bystudents at the ticket window for the volleyball match of two popularuniversities followed a distribution that has mnean of 500 and standarddeviation of 8.9. Suppose that a few hours before the start of one of thesematches, there are 100 eager students standing in line to purchase tickets.If there are 250 tickets remaining, what is the probability that all 100students will be able to purchase the tickets they want?

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4. In the given study, the sample size is not larger (which is not greater than 30), also population…

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Math

Statistics

Identify the appropriate test statistic write ztest or t test

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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